01 E38 735i Air Con problem

Notices
 

Thread: 01 E38 735i Air Con problem

Reply to Thread
Results 1 to 5 of 5
  1. 01 E38 735i Air Con problem 
    #1
    BMW Crazed
    Car Details
    sident1972's Car Details
    Model of Car:
    735I
    Year of Manufacture:
    2001
    Transmission Type:
    Automatic
    Car Body Type:
    saloon

    Join Date
    May 2008
    Location
    Haverfordwest
    Posts
    115
    Thanks
    3
    Thanked 7 Times in 7 Posts
    Hi Guys,
    After my recent electrical shennigans (Battery drain leading to new keys etc) I have found that I have another problem.

    My Max aircon button no longer works. The climate control works fine both hot and cold and the blower motor works fine too but the max button which worked fine in the summer has stopped working, no light comes on at all and there is no difference in the fan speed either.

    I have had a look at the fuses and they all look fine. Also if I use the residual heat function (IE engine off key position one and press max) the light comes on and the function works, but when I try it when the engine is on absolutely nothing.

    Obviously I have a fair few months (till we get the one day a year when the Max function is needed) to diagnose this lol, but I would rather try and diagnose it myself rather than spending any more of the wifes shoe fund on Big Bertha.

    As always any help is greatly appreciated.

    Si
    Last edited by sident1972; 31-10-2008 at 17:25. Reason: punctuation
    01 E38 735i
    18" alloys
    PRINS LPG Conversion
     
     

  2. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  3.  
    #2
    BMW Guru
    Car Details
    Ronnie's Car Details
    Model of Car:
    See above
    Year of Manufacture:
    Never too old, never too new
    Transmission Type:
    Always manual
    Car Body Type:
    Usually 5 doors
    Ronnie's Avatar
    Join Date
    Dec 2007
    Location
    Bournemouth, Dorset.
    Posts
    20,398
    Thanks
    6,198
    Thanked 7,052 Times in 5,322 Posts
    You could try having a look in the panel

    http://www.realoem.com/bmw/showparts...23&hg=64&fg=20
     
     

  4. The Following User Says Thank You to Ronnie For This Useful Post:

    sident1972 (04-11-2008)

  5.  
    #3
    BMW Crazed
    Car Details
    sident1972's Car Details
    Model of Car:
    735I
    Year of Manufacture:
    2001
    Transmission Type:
    Automatic
    Car Body Type:
    saloon

    Join Date
    May 2008
    Location
    Haverfordwest
    Posts
    115
    Thanks
    3
    Thanked 7 Times in 7 Posts
    I will take a look when I get a bit of time. The weird thing is that the button works on the residual heat function but not on max aircon. Could it possibly be a relay? I have read of people having trouble with the "Hedgehog" where is this located is it in the engine bay or in the cabin itself?
    01 E38 735i
    18" alloys
    PRINS LPG Conversion
     
     

  6. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  7.  
    #4
    BMW Fanatic
    Car Details
    RobboSRT's Car Details
    Model of Car:
    635CSI
    Year of Manufacture:
    1984
    Transmission Type:
    Manual
    Car Body Type:
    Coupe

    Join Date
    Nov 2008
    Location
    Vancouver,WA
    Posts
    33
    Thanks
    0
    Thanked 15 Times in 13 Posts
    The hedgehog is located inside the car,but this only controls blower speed.If the hedgehog was faulty you would not be able to control the blower speed.The button has a dual function as you have suggested,its possible that the IHKA unit is faulty.Have the button checked with software that checks button status
    Robbo
     
     

  8. The Following User Says Thank You to RobboSRT For This Useful Post:

    sident1972 (08-11-2008)

  9.  
    #5
    BMW Crazed
    Car Details
    sident1972's Car Details
    Model of Car:
    735I
    Year of Manufacture:
    2001
    Transmission Type:
    Automatic
    Car Body Type:
    saloon

    Join Date
    May 2008
    Location
    Haverfordwest
    Posts
    115
    Thanks
    3
    Thanked 7 Times in 7 Posts
    Cheers Robbo I will I have checked all the functions and I can have the Air Con on full and the fans on full if I do it manually but nothing if I press the button. When I get the time and cash I will get her into a local indy and have the button checked.
    Si
    01 E38 735i
    18" alloys
    PRINS LPG Conversion
     
     

Tags for this Thread

View Tag Cloud

Posting Permissions
  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts